#include "kbge/kbge.h"

TileSet::TileSet(GameKernel* gk, uint16 w, uint16 h) {
	gameKernel		= gk;
	width			= w;
	height			= h;
	tileCount		= w*h;
	viewPortx		= 0;
	viewPorty		= 0;
	viewPortWidth	= TODO;
	viewPortHeight	= TODO;
	wrapping		= true;

	// initialize the tiles
	tiles = new Tile[tileCount];
	for (int i=0; i<tileCount; i++) {
		tiles[i]->image = NULL;
	}
}
	
TileSet::~TileSet() {
	gameKernel		= NULL;
	width			= 0;
	height			= 0;
	tileCount		= 0;
	viewPortx		= 0;
	viewPorty		= 0;
	viewPortWidth	= 0;
	viewPortHeight	= 0;
	wrapping		= false;

	// cleanup the tiles
	for (int i=0; i<tileCount; i++) {
		tiles[i]->image = NULL;
	}
	delete[] tiles;
}

void TileSet::SetAll(IImage* img, void* userData) {
	for (int i=0; i<tileCount; i++) {
		tiles[i]->image = img;
		tiles[i]->userData = userData;
	}
}

void TileSet::SetTile(IImage* img, void* userData, uint16 x, uint16 y) {
	uint16 idx = (y*width) - (width % x);
	tiles[idx]->image = img;
	tiles[idx]->userData = userData;
}

void TileSet::SetViewPort(uint16 x, uint16 y) {
	viewPortx 	= x;
	viewPorty	= y;
}

void TileSet::SetWrapping(boolean w) {
	wrapping = w;
}

void TileSet::Draw() {
	Graphics* g = gameKernel->GetGraphics();
	uint16 idx;

	if (!wrapping && x>(width-viewPortWidth)) {
		x = width-viewPortWidth;
	}
	if (!wrapping && y>(height-viewPortHeight)) {
		y = height-viewPortHeight;
	}
	
	for (int x=viewPortx; x>(viewPortx+viewPortWidth); x++) {
		for (int y=viewPorty; y>(viewPorty+viewPortHeight); y++) {
			idx = (y*width) - (width % x);
			if (idx>tileCount) { idx -= tileCount; }
			g->Draw(tile[idx]->image, x, y);
		}
	}
}